Return to ucs4swapped.h CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / libiconv / lib

Annotation of embedaddon/libiconv/lib/ucs4swapped.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * Copyright (C) 1999-2000 Free Software Foundation, Inc.
        !             3:  * This file is part of the GNU LIBICONV Library.
        !             4:  *
        !             5:  * The GNU LIBICONV Library is free software; you can redistribute it
        !             6:  * and/or modify it under the terms of the GNU Library General Public
        !             7:  * License as published by the Free Software Foundation; either version 2
        !             8:  * of the License, or (at your option) any later version.
        !             9:  *
        !            10:  * The GNU LIBICONV Library is distributed in the hope that it will be
        !            11:  * useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            12:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
        !            13:  * Library General Public License for more details.
        !            14:  *
        !            15:  * You should have received a copy of the GNU Library General Public
        !            16:  * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
        !            17:  * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
        !            18:  * Fifth Floor, Boston, MA 02110-1301, USA.
        !            19:  */
        !            20: 
        !            21: /*
        !            22:  * UCS-4-SWAPPED = UCS-4-INTERNAL with inverted endianness
        !            23:  */
        !            24: 
        !            25: static int
        !            26: ucs4swapped_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n)
        !            27: {
        !            28:   /* This function assumes that 'unsigned int' has exactly 32 bits. */
        !            29:   if (sizeof(unsigned int) != 4) abort();
        !            30: 
        !            31:   if (n >= 4) {
        !            32:     unsigned int x = *(const unsigned int *)s;
        !            33:     x = (x >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | (x << 24);
        !            34:     *pwc = x;
        !            35:     return 4;
        !            36:   }
        !            37:   return RET_TOOFEW(0);
        !            38: }
        !            39: 
        !            40: static int
        !            41: ucs4swapped_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n)
        !            42: {
        !            43:   /* This function assumes that 'unsigned int' has exactly 32 bits. */
        !            44:   if (sizeof(unsigned int) != 4) abort();
        !            45: 
        !            46:   if (n >= 4) {
        !            47:     unsigned int x = wc;
        !            48:     x = (x >> 24) | ((x >> 8) & 0xff00) | ((x & 0xff00) << 8) | (x << 24);
        !            49:     *(unsigned int *)r = x;
        !            50:     return 4;
        !            51:   } else
        !            52:     return RET_TOOSMALL;
        !            53: }